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Composite materials are widely used, and the superiority of glass fiber materials will not change. Is there any risk of glass fiber being replaced by carbon fiber?

Both glass fiber and carbon fiber are new high-performance materials. Compared with glass fiber, carbon fiber has obvious advantages in strength and light weight, but also has obvious disadvantages in insulation performance.

At present, the global production capacity of carbon fiber is not large, and the production cost is very high. Due to its production raw materials and processes, carbon fiber is unlikely to achieve large-scale production and cost reduction similar to glass fiber in the foreseeable future.In contrast, in recent years, the performance and cost-effectiveness of glass fiber have been continuously improved, and some of the use of carbon fiber has been replaced in some downstream fields.

Fiberglass Direct Roving E-glass General Purpose

Glass fiber is an inorganic non-metallic material with excellent performance. Glass balls or waste glass are used as raw materials through high melting, wire drawing, winding, weaving and other processes, and finally form glass fibers. The diameter of a glass fiber is between a few microns and twenty meters, which is equivalent to a hair. One-fifth to one-tenth the diameter of silk, a bundle of fibers is composed of hundreds or thousands of monofilaments. Most people think that glass is a fragile and hard object, not suitable for use as a structural material.

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However, if it is drawn into silk, the strength will be greatly increased and it has flexibility, so it can become an excellent structural material after changing the shape with resin. The strength of glass fiber increases as its diameter decreases. These characteristics make the use of glass fibers far more extensive than other types of fibers. Glass fiber has the following characteristics: high tensile strength; high modulus of elasticity; high impact strength; chemical resistance; low water absorption;good heat resistance; many kinds of processed products; transparent colloid; low price.

Carbon Fiber Fabric 6k 3k Custom

Carbon fibers are inorganic fibers composed of carbon elements. The carbon content of the fibers is greater than 90%. Generally divided into three categories: ordinary, high-strength and high-model. Compared with glass fiber (GF), the Young's modulus is more than 3 times; compared with Kevlar fiber (KF-49), not only the Young's modulus is about 2 times, but also in organic solvent, acid , It does not swell or swell in alkali, and its corrosion resistance is outstanding. Carbon fiber is a fibrous carbon material. It is stronger than steel, less dense than aluminum, more resistant to corrosion than stainless steel, more resistant to high temperature than heat-resistant steel, can conduct electricity like copper, and has electrical, thermal and mechanical properties.

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Carbon fibers can be processed into fabrics, felts, mats, belts, paper and other materials. In traditional use, carbon fiber is generally not used alone except as a thermal insulation material, and is mostly added to resin, metal, ceramic, concrete and other materials as a reinforcing material to form a composite material. Carbon fiber reinforced composite materials can be used as aircraft structural materials, electromagnetic shielding and antistatic materials, artificial ligaments and other body substitute materials, as well as in the manufacture of rocket casings, motor boats, industrial robots, automotive leaf springs and drive shafts. Carbon fiber is widely used in civil, military, construction, chemical, industrial, aerospace and super sports car fields.

Summary: To a certain extent, there is no one who replaces glass fiber and carbon fiber. After all, the performance of the two is quite different, and their specialties are also different, and can only be selected according to the specific needs of the product. From the perspective of volume and cost, glass fiber has absolute strength; but in terms of light weight and high strength, carbon fiber is even better.


Post time: Mar-11-2022